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llvm / llvm-project / libcxx / c1dd71c8a5561eb491fcd5fb1f18887dee8cd2b1 / . / include / unordered_set
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// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_UNORDERED_SET
#define _LIBCPP_UNORDERED_SET
// clang-format off
/*
unordered_set synopsis
#include <initializer_list>
namespace std
{
template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
class Alloc = allocator<Value>>
class unordered_set
{
public:
// types
typedef Value key_type;
typedef key_type value_type;
typedef Hash hasher;
typedef Pred key_equal;
typedef Alloc allocator_type;
typedef value_type& reference;
typedef const value_type& const_reference;
typedef typename allocator_traits<allocator_type>::pointer pointer;
typedef typename allocator_traits<allocator_type>::const_pointer const_pointer;
typedef typename allocator_traits<allocator_type>::size_type size_type;
typedef typename allocator_traits<allocator_type>::difference_type difference_type;
typedef /unspecified/ iterator;
typedef /unspecified/ const_iterator;
typedef /unspecified/ local_iterator;
typedef /unspecified/ const_local_iterator;
typedef unspecified node_type unspecified; // C++17
typedef INSERT_RETURN_TYPE<iterator, node_type> insert_return_type; // C++17
unordered_set()
noexcept(
is_nothrow_default_constructible<hasher>::value &&
is_nothrow_default_constructible<key_equal>::value &&
is_nothrow_default_constructible<allocator_type>::value);
explicit unordered_set(size_type n, const hasher& hf = hasher(),
const key_equal& eql = key_equal(),
const allocator_type& a = allocator_type());
template <class InputIterator>
unordered_set(InputIterator f, InputIterator l,
size_type n = 0, const hasher& hf = hasher(),
const key_equal& eql = key_equal(),
const allocator_type& a = allocator_type());
template<container-compatible-range<value_type> R>
unordered_set(from_range_t, R&& rg, size_type n = see below,
const hasher& hf = hasher(), const key_equal& eql = key_equal(),
const allocator_type& a = allocator_type()); // C++23
explicit unordered_set(const allocator_type&);
unordered_set(const unordered_set&);
unordered_set(const unordered_set&, const Allocator&);
unordered_set(unordered_set&&)
noexcept(
is_nothrow_move_constructible<hasher>::value &&
is_nothrow_move_constructible<key_equal>::value &&
is_nothrow_move_constructible<allocator_type>::value);
unordered_set(unordered_set&&, const Allocator&);
unordered_set(initializer_list<value_type>, size_type n = 0,
const hasher& hf = hasher(), const key_equal& eql = key_equal(),
const allocator_type& a = allocator_type());
unordered_set(size_type n, const allocator_type& a); // C++14
unordered_set(size_type n, const hasher& hf, const allocator_type& a); // C++14
template <class InputIterator>
unordered_set(InputIterator f, InputIterator l, size_type n, const allocator_type& a); // C++14
template <class InputIterator>
unordered_set(InputIterator f, InputIterator l, size_type n,
const hasher& hf, const allocator_type& a); // C++14
template<container-compatible-range<value_type> R>
unordered_set(from_range_t, R&& rg, size_type n, const allocator_type& a)
: unordered_set(from_range, std::forward<R>(rg), n, hasher(), key_equal(), a) { } // C++23
template<container-compatible-range<value_type> R>
unordered_set(from_range_t, R&& rg, size_type n, const hasher& hf, const allocator_type& a)
: unordered_set(from_range, std::forward<R>(rg), n, hf, key_equal(), a) { } // C++23
unordered_set(initializer_list<value_type> il, size_type n, const allocator_type& a); // C++14
unordered_set(initializer_list<value_type> il, size_type n,
const hasher& hf, const allocator_type& a); // C++14
~unordered_set();
unordered_set& operator=(const unordered_set&);
unordered_set& operator=(unordered_set&&)
noexcept(
allocator_type::propagate_on_container_move_assignment::value &&
is_nothrow_move_assignable<allocator_type>::value &&
is_nothrow_move_assignable<hasher>::value &&
is_nothrow_move_assignable<key_equal>::value);
unordered_set& operator=(initializer_list<value_type>);
allocator_type get_allocator() const noexcept;
bool empty() const noexcept;
size_type size() const noexcept;
size_type max_size() const noexcept;
iterator begin() noexcept;
iterator end() noexcept;
const_iterator begin() const noexcept;
const_iterator end() const noexcept;
const_iterator cbegin() const noexcept;
const_iterator cend() const noexcept;
template <class... Args>
pair<iterator, bool> emplace(Args&&... args);
template <class... Args>
iterator emplace_hint(const_iterator position, Args&&... args);
pair<iterator, bool> insert(const value_type& obj);
pair<iterator, bool> insert(value_type&& obj);
iterator insert(const_iterator hint, const value_type& obj);
iterator insert(const_iterator hint, value_type&& obj);
template <class InputIterator>
void insert(InputIterator first, InputIterator last);
template<container-compatible-range<value_type> R>
void insert_range(R&& rg); // C++23
void insert(initializer_list<value_type>);
node_type extract(const_iterator position); // C++17
node_type extract(const key_type& x); // C++17
insert_return_type insert(node_type&& nh); // C++17
iterator insert(const_iterator hint, node_type&& nh); // C++17
iterator erase(const_iterator position);
iterator erase(iterator position); // C++14
size_type erase(const key_type& k);
iterator erase(const_iterator first, const_iterator last);
void clear() noexcept;
template<class H2, class P2>
void merge(unordered_set<Key, H2, P2, Allocator>& source); // C++17
template<class H2, class P2>
void merge(unordered_set<Key, H2, P2, Allocator>&& source); // C++17
template<class H2, class P2>
void merge(unordered_multiset<Key, H2, P2, Allocator>& source); // C++17
template<class H2, class P2>
void merge(unordered_multiset<Key, H2, P2, Allocator>&& source); // C++17
void swap(unordered_set&)
noexcept(allocator_traits<Allocator>::is_always_equal::value &&
noexcept(swap(declval<hasher&>(), declval<hasher&>())) &&
noexcept(swap(declval<key_equal&>(), declval<key_equal&>()))); // C++17
hasher hash_function() const;
key_equal key_eq() const;
iterator find(const key_type& k);
const_iterator find(const key_type& k) const;
template<typename K>
iterator find(const K& x); // C++20
template<typename K>
const_iterator find(const K& x) const; // C++20
size_type count(const key_type& k) const;
template<typename K>
size_type count(const K& k) const; // C++20
bool contains(const key_type& k) const; // C++20
template<typename K>
bool contains(const K& k) const; // C++20
pair<iterator, iterator> equal_range(const key_type& k);
pair<const_iterator, const_iterator> equal_range(const key_type& k) const;
template<typename K>
pair<iterator, iterator> equal_range(const K& k); // C++20
template<typename K>
pair<const_iterator, const_iterator> equal_range(const K& k) const; // C++20
size_type bucket_count() const noexcept;
size_type max_bucket_count() const noexcept;
size_type bucket_size(size_type n) const;
size_type bucket(const key_type& k) const;
local_iterator begin(size_type n);
local_iterator end(size_type n);
const_local_iterator begin(size_type n) const;
const_local_iterator end(size_type n) const;
const_local_iterator cbegin(size_type n) const;
const_local_iterator cend(size_type n) const;
float load_factor() const noexcept;
float max_load_factor() const noexcept;
void max_load_factor(float z);
void rehash(size_type n);
void reserve(size_type n);
};
template<class InputIterator,
class Hash = hash<typename iterator_traits<InputIterator>::value_type>,
class Pred = equal_to<typename iterator_traits<InputIterator>::value_type>,
class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>>
unordered_set(InputIterator, InputIterator, typename see below::size_type = see below,
Hash = Hash(), Pred = Pred(), Allocator = Allocator())
-> unordered_set<typename iterator_traits<InputIterator>::value_type,
Hash, Pred, Allocator>; // C++17
template<ranges::input_range R,
class Hash = hash<ranges::range_value_t<R>>,
class Pred = equal_to<ranges::range_value_t<R>>,
class Allocator = allocator<ranges::range_value_t<R>>>
unordered_set(from_range_t, R&&, typename see below::size_type = see below, Hash = Hash(), Pred = Pred(), Allocator = Allocator())
-> unordered_set<ranges::range_value_t<R>, Hash, Pred, Allocator>; // C++23
template<class T, class Hash = hash<T>,
class Pred = equal_to<T>, class Allocator = allocator<T>>
unordered_set(initializer_list<T>, typename see below::size_type = see below,
Hash = Hash(), Pred = Pred(), Allocator = Allocator())
-> unordered_set<T, Hash, Pred, Allocator>; // C++17
template<class InputIterator, class Allocator>
unordered_set(InputIterator, InputIterator, typename see below::size_type, Allocator)
-> unordered_set<typename iterator_traits<InputIterator>::value_type,
hash<typename iterator_traits<InputIterator>::value_type>,
equal_to<typename iterator_traits<InputIterator>::value_type>,
Allocator>; // C++17
template<class InputIterator, class Hash, class Allocator>
unordered_set(InputIterator, InputIterator, typename see below::size_type,
Hash, Allocator)
-> unordered_set<typename iterator_traits<InputIterator>::value_type, Hash,
equal_to<typename iterator_traits<InputIterator>::value_type>,
Allocator>; // C++17
template<ranges::input_range R, class Allocator>
unordered_set(from_range_t, R&&, typename see below::size_type, Allocator)
-> unordered_set<ranges::range_value_t<R>, hash<ranges::range_value_t<R>>,
equal_to<ranges::range_value_t<R>>, Allocator>; // C++23
template<ranges::input_range R, class Allocator>
unordered_set(from_range_t, R&&, Allocator)
-> unordered_set<ranges::range_value_t<R>, hash<ranges::range_value_t<R>>,
equal_to<ranges::range_value_t<R>>, Allocator>; // C++23
template<ranges::input_range R, class Hash, class Allocator>
unordered_set(from_range_t, R&&, typename see below::size_type, Hash, Allocator)
-> unordered_set<ranges::range_value_t<R>, Hash,
equal_to<ranges::range_value_t<R>>, Allocator>; // C++23
template<class T, class Allocator>
unordered_set(initializer_list<T>, typename see below::size_type, Allocator)
-> unordered_set<T, hash<T>, equal_to<T>, Allocator>; // C++17
template<class T, class Hash, class Allocator>
unordered_set(initializer_list<T>, typename see below::size_type, Hash, Allocator)
-> unordered_set<T, Hash, equal_to<T>, Allocator>; // C++17
template <class Value, class Hash, class Pred, class Alloc>
void swap(unordered_set<Value, Hash, Pred, Alloc>& x,
unordered_set<Value, Hash, Pred, Alloc>& y)
noexcept(noexcept(x.swap(y)));
template <class Value, class Hash, class Pred, class Alloc>
bool
operator==(const unordered_set<Value, Hash, Pred, Alloc>& x,
const unordered_set<Value, Hash, Pred, Alloc>& y);
template <class Value, class Hash, class Pred, class Alloc>
bool
operator!=(const unordered_set<Value, Hash, Pred, Alloc>& x,
const unordered_set<Value, Hash, Pred, Alloc>& y); // removed in C++20
template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
class Alloc = allocator<Value>>
class unordered_multiset
{
public:
// types
typedef Value key_type;
typedef key_type value_type;
typedef Hash hasher;
typedef Pred key_equal;
typedef Alloc allocator_type;
typedef value_type& reference;
typedef const value_type& const_reference;
typedef typename allocator_traits<allocator_type>::pointer pointer;
typedef typename allocator_traits<allocator_type>::const_pointer const_pointer;
typedef typename allocator_traits<allocator_type>::size_type size_type;
typedef typename allocator_traits<allocator_type>::difference_type difference_type;
typedef /unspecified/ iterator;
typedef /unspecified/ const_iterator;
typedef /unspecified/ local_iterator;
typedef /unspecified/ const_local_iterator;
typedef unspecified node_type unspecified; // C++17
unordered_multiset()
noexcept(
is_nothrow_default_constructible<hasher>::value &&
is_nothrow_default_constructible<key_equal>::value &&
is_nothrow_default_constructible<allocator_type>::value);
explicit unordered_multiset(size_type n, const hasher& hf = hasher(),
const key_equal& eql = key_equal(),
const allocator_type& a = allocator_type());
template <class InputIterator>
unordered_multiset(InputIterator f, InputIterator l,
size_type n = 0, const hasher& hf = hasher(),
const key_equal& eql = key_equal(),
const allocator_type& a = allocator_type());
template<container-compatible-range<value_type> R>
unordered_multiset(from_range_t, R&& rg, size_type n = see below,
const hasher& hf = hasher(), const key_equal& eql = key_equal(),
const allocator_type& a = allocator_type()); // C++23
explicit unordered_multiset(const allocator_type&);
unordered_multiset(const unordered_multiset&);
unordered_multiset(const unordered_multiset&, const Allocator&);
unordered_multiset(unordered_multiset&&)
noexcept(
is_nothrow_move_constructible<hasher>::value &&
is_nothrow_move_constructible<key_equal>::value &&
is_nothrow_move_constructible<allocator_type>::value);
unordered_multiset(unordered_multiset&&, const Allocator&);
unordered_multiset(initializer_list<value_type>, size_type n = /see below/,
const hasher& hf = hasher(), const key_equal& eql = key_equal(),
const allocator_type& a = allocator_type());
unordered_multiset(size_type n, const allocator_type& a); // C++14
unordered_multiset(size_type n, const hasher& hf, const allocator_type& a); // C++14
template <class InputIterator>
unordered_multiset(InputIterator f, InputIterator l, size_type n, const allocator_type& a); // C++14
template <class InputIterator>
unordered_multiset(InputIterator f, InputIterator l, size_type n,
const hasher& hf, const allocator_type& a); // C++14
template<container-compatible-range<value_type> R>
unordered_multiset(from_range_t, R&& rg, size_type n, const allocator_type& a)
: unordered_multiset(from_range, std::forward<R>(rg), n, hasher(), key_equal(), a) { } // C++23
template<container-compatible-range<value_type> R>
unordered_multiset(from_range_t, R&& rg, size_type n, const hasher& hf, const allocator_type& a)
: unordered_multiset(from_range, std::forward<R>(rg), n, hf, key_equal(), a) { } // C++23
unordered_multiset(initializer_list<value_type> il, size_type n, const allocator_type& a); // C++14
unordered_multiset(initializer_list<value_type> il, size_type n,
const hasher& hf, const allocator_type& a); // C++14
~unordered_multiset();
unordered_multiset& operator=(const unordered_multiset&);
unordered_multiset& operator=(unordered_multiset&&)
noexcept(
allocator_type::propagate_on_container_move_assignment::value &&
is_nothrow_move_assignable<allocator_type>::value &&
is_nothrow_move_assignable<hasher>::value &&
is_nothrow_move_assignable<key_equal>::value);
unordered_multiset& operator=(initializer_list<value_type>);
allocator_type get_allocator() const noexcept;
bool empty() const noexcept;
size_type size() const noexcept;
size_type max_size() const noexcept;
iterator begin() noexcept;
iterator end() noexcept;
const_iterator begin() const noexcept;
const_iterator end() const noexcept;
const_iterator cbegin() const noexcept;
const_iterator cend() const noexcept;
template <class... Args>
iterator emplace(Args&&... args);
template <class... Args>
iterator emplace_hint(const_iterator position, Args&&... args);
iterator insert(const value_type& obj);
iterator insert(value_type&& obj);
iterator insert(const_iterator hint, const value_type& obj);
iterator insert(const_iterator hint, value_type&& obj);
template <class InputIterator>
void insert(InputIterator first, InputIterator last);
template<container-compatible-range<value_type> R>
void insert_range(R&& rg); // C++23
void insert(initializer_list<value_type>);
node_type extract(const_iterator position); // C++17
node_type extract(const key_type& x); // C++17
iterator insert(node_type&& nh); // C++17
iterator insert(const_iterator hint, node_type&& nh); // C++17
iterator erase(const_iterator position);
iterator erase(iterator position); // C++14
size_type erase(const key_type& k);
iterator erase(const_iterator first, const_iterator last);
void clear() noexcept;
template<class H2, class P2>
void merge(unordered_multiset<Key, H2, P2, Allocator>& source); // C++17
template<class H2, class P2>
void merge(unordered_multiset<Key, H2, P2, Allocator>&& source); // C++17
template<class H2, class P2>
void merge(unordered_set<Key, H2, P2, Allocator>& source); // C++17
template<class H2, class P2>
void merge(unordered_set<Key, H2, P2, Allocator>&& source); // C++17
void swap(unordered_multiset&)
noexcept(allocator_traits<Allocator>::is_always_equal::value &&
noexcept(swap(declval<hasher&>(), declval<hasher&>())) &&
noexcept(swap(declval<key_equal&>(), declval<key_equal&>()))); // C++17
hasher hash_function() const;
key_equal key_eq() const;
iterator find(const key_type& k);
const_iterator find(const key_type& k) const;
template<typename K>
iterator find(const K& x); // C++20
template<typename K>
const_iterator find(const K& x) const; // C++20
size_type count(const key_type& k) const;
template<typename K>
size_type count(const K& k) const; // C++20
bool contains(const key_type& k) const; // C++20
template<typename K>
bool contains(const K& k) const; // C++20
pair<iterator, iterator> equal_range(const key_type& k);
pair<const_iterator, const_iterator> equal_range(const key_type& k) const;
template<typename K>
pair<iterator, iterator> equal_range(const K& k); // C++20
template<typename K>
pair<const_iterator, const_iterator> equal_range(const K& k) const; // C++20
size_type bucket_count() const noexcept;
size_type max_bucket_count() const noexcept;
size_type bucket_size(size_type n) const;
size_type bucket(const key_type& k) const;
local_iterator begin(size_type n);
local_iterator end(size_type n);
const_local_iterator begin(size_type n) const;
const_local_iterator end(size_type n) const;
const_local_iterator cbegin(size_type n) const;
const_local_iterator cend(size_type n) const;
float load_factor() const noexcept;
float max_load_factor() const noexcept;
void max_load_factor(float z);
void rehash(size_type n);
void reserve(size_type n);
};
template<class InputIterator,
class Hash = hash<typename iterator_traits<InputIterator>::value_type>,
class Pred = equal_to<typename iterator_traits<InputIterator>::value_type>,
class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>>
unordered_multiset(InputIterator, InputIterator, see below::size_type = see below,
Hash = Hash(), Pred = Pred(), Allocator = Allocator())
-> unordered_multiset<typename iterator_traits<InputIterator>::value_type,
Hash, Pred, Allocator>; // C++17
template<ranges::input_range R,
class Hash = hash<ranges::range_value_t<R>>,
class Pred = equal_to<ranges::range_value_t<R>>,
class Allocator = allocator<ranges::range_value_t<R>>>
unordered_multiset(from_range_t, R&&, typename see below::size_type = see below, Hash = Hash(), Pred = Pred(), Allocator = Allocator())
-> unordered_multiset<ranges::range_value_t<R>, Hash, Pred, Allocator>; // C++23
template<class T, class Hash = hash<T>,
class Pred = equal_to<T>, class Allocator = allocator<T>>
unordered_multiset(initializer_list<T>, typename see below::size_type = see below,
Hash = Hash(), Pred = Pred(), Allocator = Allocator())
-> unordered_multiset<T, Hash, Pred, Allocator>; // C++17
template<class InputIterator, class Allocator>
unordered_multiset(InputIterator, InputIterator, typename see below::size_type, Allocator)
-> unordered_multiset<typename iterator_traits<InputIterator>::value_type,
hash<typename iterator_traits<InputIterator>::value_type>,
equal_to<typename iterator_traits<InputIterator>::value_type>,
Allocator>; // C++17
template<class InputIterator, class Hash, class Allocator>
unordered_multiset(InputIterator, InputIterator, typename see below::size_type,
Hash, Allocator)
-> unordered_multiset<typename iterator_traits<InputIterator>::value_type, Hash,
equal_to<typename iterator_traits<InputIterator>::value_type>, Allocator>; // C++17
template<ranges::input_range R, class Allocator>
unordered_multiset(from_range_t, R&&, typename see below::size_type, Allocator)
-> unordered_multiset<ranges::range_value_t<R>, hash<ranges::range_value_t<R>>,
equal_to<ranges::range_value_t<R>>, Allocator>; // C++23
template<ranges::input_range R, class Allocator>
unordered_multiset(from_range_t, R&&, Allocator)
-> unordered_multiset<ranges::range_value_t<R>, hash<ranges::range_value_t<R>>,
equal_to<ranges::range_value_t<R>>, Allocator>; // C++23
template<ranges::input_range R, class Hash, class Allocator>
unordered_multiset(from_range_t, R&&, typename see below::size_type, Hash, Allocator)
-> unordered_multiset<ranges::range_value_t<R>, Hash,
equal_to<ranges::range_value_t<R>>, Allocator>; // C++23
template<class T, class Allocator>
unordered_multiset(initializer_list<T>, typename see below::size_type, Allocator)
-> unordered_multiset<T, hash<T>, equal_to<T>, Allocator>; // C++17
template<class T, class Hash, class Allocator>
unordered_multiset(initializer_list<T>, typename see below::size_type, Hash, Allocator)
-> unordered_multiset<T, Hash, equal_to<T>, Allocator>; // C++17
template <class Value, class Hash, class Pred, class Alloc>
void swap(unordered_multiset<Value, Hash, Pred, Alloc>& x,
unordered_multiset<Value, Hash, Pred, Alloc>& y)
noexcept(noexcept(x.swap(y)));
template <class K, class T, class H, class P, class A, class Predicate>
typename unordered_set<K, T, H, P, A>::size_type
erase_if(unordered_set<K, T, H, P, A>& c, Predicate pred); // C++20
template <class K, class T, class H, class P, class A, class Predicate>
typename unordered_multiset<K, T, H, P, A>::size_type
erase_if(unordered_multiset<K, T, H, P, A>& c, Predicate pred); // C++20
template <class Value, class Hash, class Pred, class Alloc>
bool
operator==(const unordered_multiset<Value, Hash, Pred, Alloc>& x,
const unordered_multiset<Value, Hash, Pred, Alloc>& y);
template <class Value, class Hash, class Pred, class Alloc>
bool
operator!=(const unordered_multiset<Value, Hash, Pred, Alloc>& x,
const unordered_multiset<Value, Hash, Pred, Alloc>& y); // removed in C++20
} // std
*/
// clang-format on
#include <__algorithm/is_permutation.h>
#include <__assert>
#include <__config>
#include <__functional/is_transparent.h>
#include <__functional/operations.h>
#include <__hash_table>
#include <__iterator/distance.h>
#include <__iterator/erase_if_container.h>
#include <__iterator/iterator_traits.h>
#include <__iterator/ranges_iterator_traits.h>
#include <__memory/addressof.h>
#include <__memory/allocator.h>
#include <__memory_resource/polymorphic_allocator.h>
#include <__node_handle>
#include <__ranges/concepts.h>
#include <__ranges/container_compatible_range.h>
#include <__ranges/from_range.h>
#include <__type_traits/is_allocator.h>
#include <__utility/forward.h>
#include <version>
// standard-mandated includes
// [iterator.range]
#include <__iterator/access.h>
#include <__iterator/data.h>
#include <__iterator/empty.h>
#include <__iterator/reverse_access.h>
#include <__iterator/size.h>
// [unord.set.syn]
#include <compare>
#include <initializer_list>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Value, class _Hash, class _Pred, class _Alloc>
class unordered_multiset;
template <class _Value, class _Hash = hash<_Value>, class _Pred = equal_to<_Value>, class _Alloc = allocator<_Value> >
class _LIBCPP_TEMPLATE_VIS unordered_set {
public:
// types
typedef _Value key_type;
typedef key_type value_type;
typedef __type_identity_t<_Hash> hasher;
typedef __type_identity_t<_Pred> key_equal;
typedef __type_identity_t<_Alloc> allocator_type;
typedef value_type& reference;
typedef const value_type& const_reference;
static_assert(__check_valid_allocator<allocator_type>::value, "");
static_assert(is_same<value_type, typename allocator_type::value_type>::value,
"Allocator::value_type must be same type as value_type");
private:
typedef __hash_table<value_type, hasher, key_equal, allocator_type> __table;
__table __table_;
public:
typedef typename __table::pointer pointer;
typedef typename __table::const_pointer const_pointer;
typedef typename __table::size_type size_type;
typedef typename __table::difference_type difference_type;
typedef typename __table::const_iterator iterator;
typedef typename __table::const_iterator const_iterator;
typedef typename __table::const_local_iterator local_iterator;
typedef typename __table::const_local_iterator const_local_iterator;
#if _LIBCPP_STD_VER >= 17
typedef __set_node_handle<typename __table::__node, allocator_type> node_type;
typedef __insert_return_type<iterator, node_type> insert_return_type;
#endif
template <class _Value2, class _Hash2, class _Pred2, class _Alloc2>
friend class _LIBCPP_TEMPLATE_VIS unordered_set;
template <class _Value2, class _Hash2, class _Pred2, class _Alloc2>
friend class _LIBCPP_TEMPLATE_VIS unordered_multiset;
_LIBCPP_HIDE_FROM_ABI unordered_set() _NOEXCEPT_(is_nothrow_default_constructible<__table>::value) {}
explicit _LIBCPP_HIDE_FROM_ABI
unordered_set(size_type __n, const hasher& __hf = hasher(), const key_equal& __eql = key_equal());
#if _LIBCPP_STD_VER >= 14
inline _LIBCPP_HIDE_FROM_ABI unordered_set(size_type __n, const allocator_type& __a)
: unordered_set(__n, hasher(), key_equal(), __a) {}
inline _LIBCPP_HIDE_FROM_ABI unordered_set(size_type __n, const hasher& __hf, const allocator_type& __a)
: unordered_set(__n, __hf, key_equal(), __a) {}
#endif
_LIBCPP_HIDE_FROM_ABI
unordered_set(size_type __n, const hasher& __hf, const key_equal& __eql, const allocator_type& __a);
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI unordered_set(_InputIterator __first, _InputIterator __last);
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI
unordered_set(_InputIterator __first,
_InputIterator __last,
size_type __n,
const hasher& __hf = hasher(),
const key_equal& __eql = key_equal());
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI unordered_set(
_InputIterator __first,
_InputIterator __last,
size_type __n,
const hasher& __hf,
const key_equal& __eql,
const allocator_type& __a);
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<value_type> _Range>
_LIBCPP_HIDE_FROM_ABI unordered_set(
from_range_t,
_Range&& __range,
size_type __n = /*implementation-defined*/ 0,
const hasher& __hf = hasher(),
const key_equal& __eql = key_equal(),
const allocator_type& __a = allocator_type())
: __table_(__hf, __eql, __a) {
if (__n > 0) {
__table_.__rehash_unique(__n);
}
insert_range(std::forward<_Range>(__range));
}
#endif
#if _LIBCPP_STD_VER >= 14
template <class _InputIterator>
inline _LIBCPP_HIDE_FROM_ABI
unordered_set(_InputIterator __first, _InputIterator __last, size_type __n, const allocator_type& __a)
: unordered_set(__first, __last, __n, hasher(), key_equal(), __a) {}
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI unordered_set(
_InputIterator __first, _InputIterator __last, size_type __n, const hasher& __hf, const allocator_type& __a)
: unordered_set(__first, __last, __n, __hf, key_equal(), __a) {}
#endif
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<value_type> _Range>
_LIBCPP_HIDE_FROM_ABI unordered_set(from_range_t, _Range&& __range, size_type __n, const allocator_type& __a)
: unordered_set(from_range, std::forward<_Range>(__range), __n, hasher(), key_equal(), __a) {}
template <_ContainerCompatibleRange<value_type> _Range>
_LIBCPP_HIDE_FROM_ABI
unordered_set(from_range_t, _Range&& __range, size_type __n, const hasher& __hf, const allocator_type& __a)
: unordered_set(from_range, std::forward<_Range>(__range), __n, __hf, key_equal(), __a) {}
#endif
_LIBCPP_HIDE_FROM_ABI explicit unordered_set(const allocator_type& __a);
_LIBCPP_HIDE_FROM_ABI unordered_set(const unordered_set& __u);
_LIBCPP_HIDE_FROM_ABI unordered_set(const unordered_set& __u, const allocator_type& __a);
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI unordered_set(unordered_set&& __u) _NOEXCEPT_(is_nothrow_move_constructible<__table>::value);
_LIBCPP_HIDE_FROM_ABI unordered_set(unordered_set&& __u, const allocator_type& __a);
_LIBCPP_HIDE_FROM_ABI unordered_set(initializer_list<value_type> __il);
_LIBCPP_HIDE_FROM_ABI
unordered_set(initializer_list<value_type> __il,
size_type __n,
const hasher& __hf = hasher(),
const key_equal& __eql = key_equal());
_LIBCPP_HIDE_FROM_ABI unordered_set(
initializer_list<value_type> __il,
size_type __n,
const hasher& __hf,
const key_equal& __eql,
const allocator_type& __a);
# if _LIBCPP_STD_VER >= 14
inline _LIBCPP_HIDE_FROM_ABI
unordered_set(initializer_list<value_type> __il, size_type __n, const allocator_type& __a)
: unordered_set(__il, __n, hasher(), key_equal(), __a) {}
inline _LIBCPP_HIDE_FROM_ABI
unordered_set(initializer_list<value_type> __il, size_type __n, const hasher& __hf, const allocator_type& __a)
: unordered_set(__il, __n, __hf, key_equal(), __a) {}
# endif
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI ~unordered_set() {
static_assert(sizeof(std::__diagnose_unordered_container_requirements<_Value, _Hash, _Pred>(0)), "");
}
_LIBCPP_HIDE_FROM_ABI unordered_set& operator=(const unordered_set& __u) {
__table_ = __u.__table_;
return *this;
}
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI unordered_set& operator=(unordered_set&& __u)
_NOEXCEPT_(is_nothrow_move_assignable<__table>::value);
_LIBCPP_HIDE_FROM_ABI unordered_set& operator=(initializer_list<value_type> __il);
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI allocator_type get_allocator() const _NOEXCEPT {
return allocator_type(__table_.__node_alloc());
}
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI bool empty() const _NOEXCEPT { return __table_.size() == 0; }
_LIBCPP_HIDE_FROM_ABI size_type size() const _NOEXCEPT { return __table_.size(); }
_LIBCPP_HIDE_FROM_ABI size_type max_size() const _NOEXCEPT { return __table_.max_size(); }
_LIBCPP_HIDE_FROM_ABI iterator begin() _NOEXCEPT { return __table_.begin(); }
_LIBCPP_HIDE_FROM_ABI iterator end() _NOEXCEPT { return __table_.end(); }
_LIBCPP_HIDE_FROM_ABI const_iterator begin() const _NOEXCEPT { return __table_.begin(); }
_LIBCPP_HIDE_FROM_ABI const_iterator end() const _NOEXCEPT { return __table_.end(); }
_LIBCPP_HIDE_FROM_ABI const_iterator cbegin() const _NOEXCEPT { return __table_.begin(); }
_LIBCPP_HIDE_FROM_ABI const_iterator cend() const _NOEXCEPT { return __table_.end(); }
#ifndef _LIBCPP_CXX03_LANG
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI pair<iterator, bool> emplace(_Args&&... __args) {
return __table_.__emplace_unique(std::forward<_Args>(__args)...);
}
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI iterator emplace_hint(const_iterator, _Args&&... __args) {
return __table_.__emplace_unique(std::forward<_Args>(__args)...).first;
}
_LIBCPP_HIDE_FROM_ABI pair<iterator, bool> insert(value_type&& __x) {
return __table_.__insert_unique(std::move(__x));
}
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator, value_type&& __x) { return insert(std::move(__x)).first; }
_LIBCPP_HIDE_FROM_ABI void insert(initializer_list<value_type> __il) { insert(__il.begin(), __il.end()); }
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI pair<iterator, bool> insert(const value_type& __x) { return __table_.__insert_unique(__x); }
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator, const value_type& __x) { return insert(__x).first; }
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI void insert(_InputIterator __first, _InputIterator __last);
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<value_type> _Range>
_LIBCPP_HIDE_FROM_ABI void insert_range(_Range&& __range) {
for (auto&& __element : __range) {
__table_.__insert_unique(std::forward<decltype(__element)>(__element));
}
}
#endif
_LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __p) { return __table_.erase(__p); }
_LIBCPP_HIDE_FROM_ABI size_type erase(const key_type& __k) { return __table_.__erase_unique(__k); }
_LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __first, const_iterator __last) {
return __table_.erase(__first, __last);
}
_LIBCPP_HIDE_FROM_ABI void clear() _NOEXCEPT { __table_.clear(); }
#if _LIBCPP_STD_VER >= 17
_LIBCPP_HIDE_FROM_ABI insert_return_type insert(node_type&& __nh) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(__nh.empty() || __nh.get_allocator() == get_allocator(),
"node_type with incompatible allocator passed to unordered_set::insert()");
return __table_.template __node_handle_insert_unique< node_type, insert_return_type>(std::move(__nh));
}
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __h, node_type&& __nh) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(__nh.empty() || __nh.get_allocator() == get_allocator(),
"node_type with incompatible allocator passed to unordered_set::insert()");
return __table_.template __node_handle_insert_unique<node_type>(__h, std::move(__nh));
}
_LIBCPP_HIDE_FROM_ABI node_type extract(key_type const& __key) {
return __table_.template __node_handle_extract<node_type>(__key);
}
_LIBCPP_HIDE_FROM_ABI node_type extract(const_iterator __it) {
return __table_.template __node_handle_extract<node_type>(__it);
}
template <class _H2, class _P2>
_LIBCPP_HIDE_FROM_ABI void merge(unordered_set<key_type, _H2, _P2, allocator_type>& __source) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(
__source.get_allocator() == get_allocator(), "merging container with incompatible allocator");
__table_.__node_handle_merge_unique(__source.__table_);
}
template <class _H2, class _P2>
_LIBCPP_HIDE_FROM_ABI void merge(unordered_set<key_type, _H2, _P2, allocator_type>&& __source) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(
__source.get_allocator() == get_allocator(), "merging container with incompatible allocator");
__table_.__node_handle_merge_unique(__source.__table_);
}
template <class _H2, class _P2>
_LIBCPP_HIDE_FROM_ABI void merge(unordered_multiset<key_type, _H2, _P2, allocator_type>& __source) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(
__source.get_allocator() == get_allocator(), "merging container with incompatible allocator");
__table_.__node_handle_merge_unique(__source.__table_);
}
template <class _H2, class _P2>
_LIBCPP_HIDE_FROM_ABI void merge(unordered_multiset<key_type, _H2, _P2, allocator_type>&& __source) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(
__source.get_allocator() == get_allocator(), "merging container with incompatible allocator");
__table_.__node_handle_merge_unique(__source.__table_);
}
#endif
_LIBCPP_HIDE_FROM_ABI void swap(unordered_set& __u) _NOEXCEPT_(__is_nothrow_swappable_v<__table>) {
__table_.swap(__u.__table_);
}
_LIBCPP_HIDE_FROM_ABI hasher hash_function() const { return __table_.hash_function(); }
_LIBCPP_HIDE_FROM_ABI key_equal key_eq() const { return __table_.key_eq(); }
_LIBCPP_HIDE_FROM_ABI iterator find(const key_type& __k) { return __table_.find(__k); }
_LIBCPP_HIDE_FROM_ABI const_iterator find(const key_type& __k) const { return __table_.find(__k); }
#if _LIBCPP_STD_VER >= 20
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI iterator find(const _K2& __k) {
return __table_.find(__k);
}
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI const_iterator find(const _K2& __k) const {
return __table_.find(__k);
}
#endif // _LIBCPP_STD_VER >= 20
_LIBCPP_HIDE_FROM_ABI size_type count(const key_type& __k) const { return __table_.__count_unique(__k); }
#if _LIBCPP_STD_VER >= 20
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI size_type count(const _K2& __k) const {
return __table_.__count_unique(__k);
}
#endif // _LIBCPP_STD_VER >= 20
#if _LIBCPP_STD_VER >= 20
_LIBCPP_HIDE_FROM_ABI bool contains(const key_type& __k) const { return find(__k) != end(); }
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI bool contains(const _K2& __k) const {
return find(__k) != end();
}
#endif // _LIBCPP_STD_VER >= 20
_LIBCPP_HIDE_FROM_ABI pair<iterator, iterator> equal_range(const key_type& __k) {
return __table_.__equal_range_unique(__k);
}
_LIBCPP_HIDE_FROM_ABI pair<const_iterator, const_iterator> equal_range(const key_type& __k) const {
return __table_.__equal_range_unique(__k);
}
#if _LIBCPP_STD_VER >= 20
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI pair<iterator, iterator> equal_range(const _K2& __k) {
return __table_.__equal_range_unique(__k);
}
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI pair<const_iterator, const_iterator> equal_range(const _K2& __k) const {
return __table_.__equal_range_unique(__k);
}
#endif // _LIBCPP_STD_VER >= 20
_LIBCPP_HIDE_FROM_ABI size_type bucket_count() const _NOEXCEPT { return __table_.bucket_count(); }
_LIBCPP_HIDE_FROM_ABI size_type max_bucket_count() const _NOEXCEPT { return __table_.max_bucket_count(); }
_LIBCPP_HIDE_FROM_ABI size_type bucket_size(size_type __n) const { return __table_.bucket_size(__n); }
_LIBCPP_HIDE_FROM_ABI size_type bucket(const key_type& __k) const { return __table_.bucket(__k); }
_LIBCPP_HIDE_FROM_ABI local_iterator begin(size_type __n) { return __table_.begin(__n); }
_LIBCPP_HIDE_FROM_ABI local_iterator end(size_type __n) { return __table_.end(__n); }
_LIBCPP_HIDE_FROM_ABI const_local_iterator begin(size_type __n) const { return __table_.cbegin(__n); }
_LIBCPP_HIDE_FROM_ABI const_local_iterator end(size_type __n) const { return __table_.cend(__n); }
_LIBCPP_HIDE_FROM_ABI const_local_iterator cbegin(size_type __n) const { return __table_.cbegin(__n); }
_LIBCPP_HIDE_FROM_ABI const_local_iterator cend(size_type __n) const { return __table_.cend(__n); }
_LIBCPP_HIDE_FROM_ABI float load_factor() const _NOEXCEPT { return __table_.load_factor(); }
_LIBCPP_HIDE_FROM_ABI float max_load_factor() const _NOEXCEPT { return __table_.max_load_factor(); }
_LIBCPP_HIDE_FROM_ABI void max_load_factor(float __mlf) { __table_.max_load_factor(__mlf); }
_LIBCPP_HIDE_FROM_ABI void rehash(size_type __n) { __table_.__rehash_unique(__n); }
_LIBCPP_HIDE_FROM_ABI void reserve(size_type __n) { __table_.__reserve_unique(__n); }
};
#if _LIBCPP_STD_VER >= 17
template <class _InputIterator,
class _Hash = hash<__iter_value_type<_InputIterator>>,
class _Pred = equal_to<__iter_value_type<_InputIterator>>,
class _Allocator = allocator<__iter_value_type<_InputIterator>>,
class = enable_if_t<__has_input_iterator_category<_InputIterator>::value>,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<!__is_allocator<_Pred>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_set(_InputIterator,
_InputIterator,
typename allocator_traits<_Allocator>::size_type = 0,
_Hash = _Hash(),
_Pred = _Pred(),
_Allocator = _Allocator()) -> unordered_set<__iter_value_type<_InputIterator>, _Hash, _Pred, _Allocator>;
# if _LIBCPP_STD_VER >= 23
template <ranges::input_range _Range,
class _Hash = hash<ranges::range_value_t<_Range>>,
class _Pred = equal_to<ranges::range_value_t<_Range>>,
class _Allocator = allocator<ranges::range_value_t<_Range>>,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<!__is_allocator<_Pred>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_set(
from_range_t,
_Range&&,
typename allocator_traits<_Allocator>::size_type = 0,
_Hash = _Hash(),
_Pred = _Pred(),
_Allocator = _Allocator()) -> unordered_set<ranges::range_value_t<_Range>, _Hash, _Pred, _Allocator>; // C++23
# endif
template <class _Tp,
class _Hash = hash<_Tp>,
class _Pred = equal_to<_Tp>,
class _Allocator = allocator<_Tp>,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<!__is_allocator<_Pred>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_set(initializer_list<_Tp>,
typename allocator_traits<_Allocator>::size_type = 0,
_Hash = _Hash(),
_Pred = _Pred(),
_Allocator = _Allocator()) -> unordered_set<_Tp, _Hash, _Pred, _Allocator>;
template <class _InputIterator,
class _Allocator,
class = enable_if_t<__has_input_iterator_category<_InputIterator>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_set(_InputIterator, _InputIterator, typename allocator_traits<_Allocator>::size_type, _Allocator)
-> unordered_set<__iter_value_type<_InputIterator>,
hash<__iter_value_type<_InputIterator>>,
equal_to<__iter_value_type<_InputIterator>>,
_Allocator>;
template <class _InputIterator,
class _Hash,
class _Allocator,
class = enable_if_t<__has_input_iterator_category<_InputIterator>::value>,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_set(_InputIterator, _InputIterator, typename allocator_traits<_Allocator>::size_type, _Hash, _Allocator)
-> unordered_set<__iter_value_type<_InputIterator>, _Hash, equal_to<__iter_value_type<_InputIterator>>, _Allocator>;
# if _LIBCPP_STD_VER >= 23
template <ranges::input_range _Range, class _Allocator, class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_set(from_range_t, _Range&&, typename allocator_traits<_Allocator>::size_type, _Allocator)
-> unordered_set<ranges::range_value_t<_Range>,
hash<ranges::range_value_t<_Range>>,
equal_to<ranges::range_value_t<_Range>>,
_Allocator>;
template <ranges::input_range _Range, class _Allocator, class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_set(from_range_t, _Range&&, _Allocator)
-> unordered_set<ranges::range_value_t<_Range>,
hash<ranges::range_value_t<_Range>>,
equal_to<ranges::range_value_t<_Range>>,
_Allocator>;
template <ranges::input_range _Range,
class _Hash,
class _Allocator,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_set(from_range_t, _Range&&, typename allocator_traits<_Allocator>::size_type, _Hash, _Allocator)
-> unordered_set<ranges::range_value_t<_Range>, _Hash, equal_to<ranges::range_value_t<_Range>>, _Allocator>;
# endif
template <class _Tp, class _Allocator, class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_set(initializer_list<_Tp>, typename allocator_traits<_Allocator>::size_type, _Allocator)
-> unordered_set<_Tp, hash<_Tp>, equal_to<_Tp>, _Allocator>;
template <class _Tp,
class _Hash,
class _Allocator,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_set(initializer_list<_Tp>, typename allocator_traits<_Allocator>::size_type, _Hash, _Allocator)
-> unordered_set<_Tp, _Hash, equal_to<_Tp>, _Allocator>;
#endif
template <class _Value, class _Hash, class _Pred, class _Alloc>
unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(size_type __n, const hasher& __hf, const key_equal& __eql)
: __table_(__hf, __eql) {
__table_.__rehash_unique(__n);
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(
size_type __n, const hasher& __hf, const key_equal& __eql, const allocator_type& __a)
: __table_(__hf, __eql, __a) {
__table_.__rehash_unique(__n);
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(_InputIterator __first, _InputIterator __last) {
insert(__first, __last);
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(
_InputIterator __first, _InputIterator __last, size_type __n, const hasher& __hf, const key_equal& __eql)
: __table_(__hf, __eql) {
__table_.__rehash_unique(__n);
insert(__first, __last);
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(
_InputIterator __first,
_InputIterator __last,
size_type __n,
const hasher& __hf,
const key_equal& __eql,
const allocator_type& __a)
: __table_(__hf, __eql, __a) {
__table_.__rehash_unique(__n);
insert(__first, __last);
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
inline unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(const allocator_type& __a) : __table_(__a) {}
template <class _Value, class _Hash, class _Pred, class _Alloc>
unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(const unordered_set& __u) : __table_(__u.__table_) {
__table_.__rehash_unique(__u.bucket_count());
insert(__u.begin(), __u.end());
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(const unordered_set& __u, const allocator_type& __a)
: __table_(__u.__table_, __a) {
__table_.__rehash_unique(__u.bucket_count());
insert(__u.begin(), __u.end());
}
#ifndef _LIBCPP_CXX03_LANG
template <class _Value, class _Hash, class _Pred, class _Alloc>
inline unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(unordered_set&& __u)
_NOEXCEPT_(is_nothrow_move_constructible<__table>::value)
: __table_(std::move(__u.__table_)) {}
template <class _Value, class _Hash, class _Pred, class _Alloc>
unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(unordered_set&& __u, const allocator_type& __a)
: __table_(std::move(__u.__table_), __a) {
if (__a != __u.get_allocator()) {
iterator __i = __u.begin();
while (__u.size() != 0)
__table_.__insert_unique(std::move(__u.__table_.remove(__i++)->__get_value()));
}
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(initializer_list<value_type> __il) {
insert(__il.begin(), __il.end());
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(
initializer_list<value_type> __il, size_type __n, const hasher& __hf, const key_equal& __eql)
: __table_(__hf, __eql) {
__table_.__rehash_unique(__n);
insert(__il.begin(), __il.end());
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(
initializer_list<value_type> __il,
size_type __n,
const hasher& __hf,
const key_equal& __eql,
const allocator_type& __a)
: __table_(__hf, __eql, __a) {
__table_.__rehash_unique(__n);
insert(__il.begin(), __il.end());
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
inline unordered_set<_Value, _Hash, _Pred, _Alloc>&
unordered_set<_Value, _Hash, _Pred, _Alloc>::operator=(unordered_set&& __u)
_NOEXCEPT_(is_nothrow_move_assignable<__table>::value) {
__table_ = std::move(__u.__table_);
return *this;
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
inline unordered_set<_Value, _Hash, _Pred, _Alloc>&
unordered_set<_Value, _Hash, _Pred, _Alloc>::operator=(initializer_list<value_type> __il) {
__table_.__assign_unique(__il.begin(), __il.end());
return *this;
}
#endif // _LIBCPP_CXX03_LANG
template <class _Value, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
inline void unordered_set<_Value, _Hash, _Pred, _Alloc>::insert(_InputIterator __first, _InputIterator __last) {
for (; __first != __last; ++__first)
__table_.__insert_unique(*__first);
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_HIDE_FROM_ABI void
swap(unordered_set<_Value, _Hash, _Pred, _Alloc>& __x, unordered_set<_Value, _Hash, _Pred, _Alloc>& __y)
_NOEXCEPT_(_NOEXCEPT_(__x.swap(__y))) {
__x.swap(__y);
}
#if _LIBCPP_STD_VER >= 20
template <class _Value, class _Hash, class _Pred, class _Alloc, class _Predicate>
inline _LIBCPP_HIDE_FROM_ABI typename unordered_set<_Value, _Hash, _Pred, _Alloc>::size_type
erase_if(unordered_set<_Value, _Hash, _Pred, _Alloc>& __c, _Predicate __pred) {
return std::__libcpp_erase_if_container(__c, __pred);
}
#endif
template <class _Value, class _Hash, class _Pred, class _Alloc>
_LIBCPP_HIDE_FROM_ABI bool operator==(const unordered_set<_Value, _Hash, _Pred, _Alloc>& __x,
const unordered_set<_Value, _Hash, _Pred, _Alloc>& __y) {
if (__x.size() != __y.size())
return false;
typedef typename unordered_set<_Value, _Hash, _Pred, _Alloc>::const_iterator const_iterator;
for (const_iterator __i = __x.begin(), __ex = __x.end(), __ey = __y.end(); __i != __ex; ++__i) {
const_iterator __j = __y.find(*__i);
if (__j == __ey || !(*__i == *__j))
return false;
}
return true;
}
#if _LIBCPP_STD_VER <= 17
template <class _Value, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_HIDE_FROM_ABI bool operator!=(const unordered_set<_Value, _Hash, _Pred, _Alloc>& __x,
const unordered_set<_Value, _Hash, _Pred, _Alloc>& __y) {
return !(__x == __y);
}
#endif
template <class _Value, class _Hash = hash<_Value>, class _Pred = equal_to<_Value>, class _Alloc = allocator<_Value> >
class _LIBCPP_TEMPLATE_VIS unordered_multiset {
public:
// types
typedef _Value key_type;
typedef key_type value_type;
typedef __type_identity_t<_Hash> hasher;
typedef __type_identity_t<_Pred> key_equal;
typedef __type_identity_t<_Alloc> allocator_type;
typedef value_type& reference;
typedef const value_type& const_reference;
static_assert(is_same<value_type, typename allocator_type::value_type>::value,
"Allocator::value_type must be same type as value_type");
private:
typedef __hash_table<value_type, hasher, key_equal, allocator_type> __table;
__table __table_;
public:
typedef typename __table::pointer pointer;
typedef typename __table::const_pointer const_pointer;
typedef typename __table::size_type size_type;
typedef typename __table::difference_type difference_type;
typedef typename __table::const_iterator iterator;
typedef typename __table::const_iterator const_iterator;
typedef typename __table::const_local_iterator local_iterator;
typedef typename __table::const_local_iterator const_local_iterator;
#if _LIBCPP_STD_VER >= 17
typedef __set_node_handle<typename __table::__node, allocator_type> node_type;
#endif
template <class _Value2, class _Hash2, class _Pred2, class _Alloc2>
friend class _LIBCPP_TEMPLATE_VIS unordered_set;
template <class _Value2, class _Hash2, class _Pred2, class _Alloc2>
friend class _LIBCPP_TEMPLATE_VIS unordered_multiset;
_LIBCPP_HIDE_FROM_ABI unordered_multiset() _NOEXCEPT_(is_nothrow_default_constructible<__table>::value) {}
explicit _LIBCPP_HIDE_FROM_ABI
unordered_multiset(size_type __n, const hasher& __hf = hasher(), const key_equal& __eql = key_equal());
_LIBCPP_HIDE_FROM_ABI
unordered_multiset(size_type __n, const hasher& __hf, const key_equal& __eql, const allocator_type& __a);
#if _LIBCPP_STD_VER >= 14
inline _LIBCPP_HIDE_FROM_ABI unordered_multiset(size_type __n, const allocator_type& __a)
: unordered_multiset(__n, hasher(), key_equal(), __a) {}
inline _LIBCPP_HIDE_FROM_ABI unordered_multiset(size_type __n, const hasher& __hf, const allocator_type& __a)
: unordered_multiset(__n, __hf, key_equal(), __a) {}
#endif
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI unordered_multiset(_InputIterator __first, _InputIterator __last);
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI unordered_multiset(
_InputIterator __first,
_InputIterator __last,
size_type __n,
const hasher& __hf = hasher(),
const key_equal& __eql = key_equal());
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI unordered_multiset(
_InputIterator __first,
_InputIterator __last,
size_type __n,
const hasher& __hf,
const key_equal& __eql,
const allocator_type& __a);
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<value_type> _Range>
_LIBCPP_HIDE_FROM_ABI unordered_multiset(
from_range_t,
_Range&& __range,
size_type __n = /*implementation-defined*/ 0,
const hasher& __hf = hasher(),
const key_equal& __eql = key_equal(),
const allocator_type& __a = allocator_type())
: __table_(__hf, __eql, __a) {
if (__n > 0) {
__table_.__rehash_multi(__n);
}
insert_range(std::forward<_Range>(__range));
}
#endif
#if _LIBCPP_STD_VER >= 14
template <class _InputIterator>
inline _LIBCPP_HIDE_FROM_ABI
unordered_multiset(_InputIterator __first, _InputIterator __last, size_type __n, const allocator_type& __a)
: unordered_multiset(__first, __last, __n, hasher(), key_equal(), __a) {}
template <class _InputIterator>
inline _LIBCPP_HIDE_FROM_ABI unordered_multiset(
_InputIterator __first, _InputIterator __last, size_type __n, const hasher& __hf, const allocator_type& __a)
: unordered_multiset(__first, __last, __n, __hf, key_equal(), __a) {}
#endif
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<value_type> _Range>
_LIBCPP_HIDE_FROM_ABI unordered_multiset(from_range_t, _Range&& __range, size_type __n, const allocator_type& __a)
: unordered_multiset(from_range, std::forward<_Range>(__range), __n, hasher(), key_equal(), __a) {}
template <_ContainerCompatibleRange<value_type> _Range>
_LIBCPP_HIDE_FROM_ABI
unordered_multiset(from_range_t, _Range&& __range, size_type __n, const hasher& __hf, const allocator_type& __a)
: unordered_multiset(from_range, std::forward<_Range>(__range), __n, __hf, key_equal(), __a) {}
#endif
_LIBCPP_HIDE_FROM_ABI explicit unordered_multiset(const allocator_type& __a);
_LIBCPP_HIDE_FROM_ABI unordered_multiset(const unordered_multiset& __u);
_LIBCPP_HIDE_FROM_ABI unordered_multiset(const unordered_multiset& __u, const allocator_type& __a);
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI unordered_multiset(unordered_multiset&& __u)
_NOEXCEPT_(is_nothrow_move_constructible<__table>::value);
_LIBCPP_HIDE_FROM_ABI unordered_multiset(unordered_multiset&& __u, const allocator_type& __a);
_LIBCPP_HIDE_FROM_ABI unordered_multiset(initializer_list<value_type> __il);
_LIBCPP_HIDE_FROM_ABI unordered_multiset(
initializer_list<value_type> __il,
size_type __n,
const hasher& __hf = hasher(),
const key_equal& __eql = key_equal());
_LIBCPP_HIDE_FROM_ABI unordered_multiset(
initializer_list<value_type> __il,
size_type __n,
const hasher& __hf,
const key_equal& __eql,
const allocator_type& __a);
# if _LIBCPP_STD_VER >= 14
inline _LIBCPP_HIDE_FROM_ABI
unordered_multiset(initializer_list<value_type> __il, size_type __n, const allocator_type& __a)
: unordered_multiset(__il, __n, hasher(), key_equal(), __a) {}
inline _LIBCPP_HIDE_FROM_ABI
unordered_multiset(initializer_list<value_type> __il, size_type __n, const hasher& __hf, const allocator_type& __a)
: unordered_multiset(__il, __n, __hf, key_equal(), __a) {}
# endif
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI ~unordered_multiset() {
static_assert(sizeof(std::__diagnose_unordered_container_requirements<_Value, _Hash, _Pred>(0)), "");
}
_LIBCPP_HIDE_FROM_ABI unordered_multiset& operator=(const unordered_multiset& __u) {
__table_ = __u.__table_;
return *this;
}
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI unordered_multiset& operator=(unordered_multiset&& __u)
_NOEXCEPT_(is_nothrow_move_assignable<__table>::value);
_LIBCPP_HIDE_FROM_ABI unordered_multiset& operator=(initializer_list<value_type> __il);
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI allocator_type get_allocator() const _NOEXCEPT {
return allocator_type(__table_.__node_alloc());
}
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI bool empty() const _NOEXCEPT { return __table_.size() == 0; }
_LIBCPP_HIDE_FROM_ABI size_type size() const _NOEXCEPT { return __table_.size(); }
_LIBCPP_HIDE_FROM_ABI size_type max_size() const _NOEXCEPT { return __table_.max_size(); }
_LIBCPP_HIDE_FROM_ABI iterator begin() _NOEXCEPT { return __table_.begin(); }
_LIBCPP_HIDE_FROM_ABI iterator end() _NOEXCEPT { return __table_.end(); }
_LIBCPP_HIDE_FROM_ABI const_iterator begin() const _NOEXCEPT { return __table_.begin(); }
_LIBCPP_HIDE_FROM_ABI const_iterator end() const _NOEXCEPT { return __table_.end(); }
_LIBCPP_HIDE_FROM_ABI const_iterator cbegin() const _NOEXCEPT { return __table_.begin(); }
_LIBCPP_HIDE_FROM_ABI const_iterator cend() const _NOEXCEPT { return __table_.end(); }
#ifndef _LIBCPP_CXX03_LANG
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI iterator emplace(_Args&&... __args) {
return __table_.__emplace_multi(std::forward<_Args>(__args)...);
}
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI iterator emplace_hint(const_iterator __p, _Args&&... __args) {
return __table_.__emplace_hint_multi(__p, std::forward<_Args>(__args)...);
}
_LIBCPP_HIDE_FROM_ABI iterator insert(value_type&& __x) { return __table_.__insert_multi(std::move(__x)); }
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __p, value_type&& __x) {
return __table_.__insert_multi(__p, std::move(__x));
}
_LIBCPP_HIDE_FROM_ABI void insert(initializer_list<value_type> __il) { insert(__il.begin(), __il.end()); }
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI iterator insert(const value_type& __x) { return __table_.__insert_multi(__x); }
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __p, const value_type& __x) {
return __table_.__insert_multi(__p, __x);
}
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI void insert(_InputIterator __first, _InputIterator __last);
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<value_type> _Range>
_LIBCPP_HIDE_FROM_ABI void insert_range(_Range&& __range) {
for (auto&& __element : __range) {
__table_.__insert_multi(std::forward<decltype(__element)>(__element));
}
}
#endif
#if _LIBCPP_STD_VER >= 17
_LIBCPP_HIDE_FROM_ABI iterator insert(node_type&& __nh) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(__nh.empty() || __nh.get_allocator() == get_allocator(),
"node_type with incompatible allocator passed to unordered_multiset::insert()");
return __table_.template __node_handle_insert_multi<node_type>(std::move(__nh));
}
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __hint, node_type&& __nh) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(__nh.empty() || __nh.get_allocator() == get_allocator(),
"node_type with incompatible allocator passed to unordered_multiset::insert()");
return __table_.template __node_handle_insert_multi<node_type>(__hint, std::move(__nh));
}
_LIBCPP_HIDE_FROM_ABI node_type extract(const_iterator __position) {
return __table_.template __node_handle_extract<node_type>(__position);
}
_LIBCPP_HIDE_FROM_ABI node_type extract(key_type const& __key) {
return __table_.template __node_handle_extract<node_type>(__key);
}
template <class _H2, class _P2>
_LIBCPP_HIDE_FROM_ABI void merge(unordered_multiset<key_type, _H2, _P2, allocator_type>& __source) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(
__source.get_allocator() == get_allocator(), "merging container with incompatible allocator");
return __table_.__node_handle_merge_multi(__source.__table_);
}
template <class _H2, class _P2>
_LIBCPP_HIDE_FROM_ABI void merge(unordered_multiset<key_type, _H2, _P2, allocator_type>&& __source) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(
__source.get_allocator() == get_allocator(), "merging container with incompatible allocator");
return __table_.__node_handle_merge_multi(__source.__table_);
}
template <class _H2, class _P2>
_LIBCPP_HIDE_FROM_ABI void merge(unordered_set<key_type, _H2, _P2, allocator_type>& __source) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(
__source.get_allocator() == get_allocator(), "merging container with incompatible allocator");
return __table_.__node_handle_merge_multi(__source.__table_);
}
template <class _H2, class _P2>
_LIBCPP_HIDE_FROM_ABI void merge(unordered_set<key_type, _H2, _P2, allocator_type>&& __source) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(
__source.get_allocator() == get_allocator(), "merging container with incompatible allocator");
return __table_.__node_handle_merge_multi(__source.__table_);
}
#endif
_LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __p) { return __table_.erase(__p); }
_LIBCPP_HIDE_FROM_ABI size_type erase(const key_type& __k) { return __table_.__erase_multi(__k); }
_LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __first, const_iterator __last) {
return __table_.erase(__first, __last);
}
_LIBCPP_HIDE_FROM_ABI void clear() _NOEXCEPT { __table_.clear(); }
_LIBCPP_HIDE_FROM_ABI void swap(unordered_multiset& __u) _NOEXCEPT_(__is_nothrow_swappable_v<__table>) {
__table_.swap(__u.__table_);
}
_LIBCPP_HIDE_FROM_ABI hasher hash_function() const { return __table_.hash_function(); }
_LIBCPP_HIDE_FROM_ABI key_equal key_eq() const { return __table_.key_eq(); }
_LIBCPP_HIDE_FROM_ABI iterator find(const key_type& __k) { return __table_.find(__k); }
_LIBCPP_HIDE_FROM_ABI const_iterator find(const key_type& __k) const { return __table_.find(__k); }
#if _LIBCPP_STD_VER >= 20
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI iterator find(const _K2& __k) {
return __table_.find(__k);
}
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI const_iterator find(const _K2& __k) const {
return __table_.find(__k);
}
#endif // _LIBCPP_STD_VER >= 20
_LIBCPP_HIDE_FROM_ABI size_type count(const key_type& __k) const { return __table_.__count_multi(__k); }
#if _LIBCPP_STD_VER >= 20
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI size_type count(const _K2& __k) const {
return __table_.__count_multi(__k);
}
#endif // _LIBCPP_STD_VER >= 20
#if _LIBCPP_STD_VER >= 20
_LIBCPP_HIDE_FROM_ABI bool contains(const key_type& __k) const { return find(__k) != end(); }
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI bool contains(const _K2& __k) const {
return find(__k) != end();
}
#endif // _LIBCPP_STD_VER >= 20
_LIBCPP_HIDE_FROM_ABI pair<iterator, iterator> equal_range(const key_type& __k) {
return __table_.__equal_range_multi(__k);
}
_LIBCPP_HIDE_FROM_ABI pair<const_iterator, const_iterator> equal_range(const key_type& __k) const {
return __table_.__equal_range_multi(__k);
}
#if _LIBCPP_STD_VER >= 20
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI pair<iterator, iterator> equal_range(const _K2& __k) {
return __table_.__equal_range_multi(__k);
}
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI pair<const_iterator, const_iterator> equal_range(const _K2& __k) const {
return __table_.__equal_range_multi(__k);
}
#endif // _LIBCPP_STD_VER >= 20
_LIBCPP_HIDE_FROM_ABI size_type bucket_count() const _NOEXCEPT { return __table_.bucket_count(); }
_LIBCPP_HIDE_FROM_ABI size_type max_bucket_count() const _NOEXCEPT { return __table_.max_bucket_count(); }
_LIBCPP_HIDE_FROM_ABI size_type bucket_size(size_type __n) const { return __table_.bucket_size(__n); }
_LIBCPP_HIDE_FROM_ABI size_type bucket(const key_type& __k) const { return __table_.bucket(__k); }
_LIBCPP_HIDE_FROM_ABI local_iterator begin(size_type __n) { return __table_.begin(__n); }
_LIBCPP_HIDE_FROM_ABI local_iterator end(size_type __n) { return __table_.end(__n); }
_LIBCPP_HIDE_FROM_ABI const_local_iterator begin(size_type __n) const { return __table_.cbegin(__n); }
_LIBCPP_HIDE_FROM_ABI const_local_iterator end(size_type __n) const { return __table_.cend(__n); }
_LIBCPP_HIDE_FROM_ABI const_local_iterator cbegin(size_type __n) const { return __table_.cbegin(__n); }
_LIBCPP_HIDE_FROM_ABI const_local_iterator cend(size_type __n) const { return __table_.cend(__n); }
_LIBCPP_HIDE_FROM_ABI float load_factor() const _NOEXCEPT { return __table_.load_factor(); }
_LIBCPP_HIDE_FROM_ABI float max_load_factor() const _NOEXCEPT { return __table_.max_load_factor(); }
_LIBCPP_HIDE_FROM_ABI void max_load_factor(float __mlf) { __table_.max_load_factor(__mlf); }
_LIBCPP_HIDE_FROM_ABI void rehash(size_type __n) { __table_.__rehash_multi(__n); }
_LIBCPP_HIDE_FROM_ABI void reserve(size_type __n) { __table_.__reserve_multi(__n); }
};
#if _LIBCPP_STD_VER >= 17
template <class _InputIterator,
class _Hash = hash<__iter_value_type<_InputIterator>>,
class _Pred = equal_to<__iter_value_type<_InputIterator>>,
class _Allocator = allocator<__iter_value_type<_InputIterator>>,
class = enable_if_t<__has_input_iterator_category<_InputIterator>::value>,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<!__is_allocator<_Pred>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multiset(
_InputIterator,
_InputIterator,
typename allocator_traits<_Allocator>::size_type = 0,
_Hash = _Hash(),
_Pred = _Pred(),
_Allocator = _Allocator()) -> unordered_multiset<__iter_value_type<_InputIterator>, _Hash, _Pred, _Allocator>;
# if _LIBCPP_STD_VER >= 23
template <ranges::input_range _Range,
class _Hash = hash<ranges::range_value_t<_Range>>,
class _Pred = equal_to<ranges::range_value_t<_Range>>,
class _Allocator = allocator<ranges::range_value_t<_Range>>,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<!__is_allocator<_Pred>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multiset(
from_range_t,
_Range&&,
typename allocator_traits<_Allocator>::size_type = 0,
_Hash = _Hash(),
_Pred = _Pred(),
_Allocator = _Allocator()) -> unordered_multiset<ranges::range_value_t<_Range>, _Hash, _Pred, _Allocator>; // C++23
# endif
template <class _Tp,
class _Hash = hash<_Tp>,
class _Pred = equal_to<_Tp>,
class _Allocator = allocator<_Tp>,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<!__is_allocator<_Pred>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multiset(initializer_list<_Tp>,
typename allocator_traits<_Allocator>::size_type = 0,
_Hash = _Hash(),
_Pred = _Pred(),
_Allocator = _Allocator()) -> unordered_multiset<_Tp, _Hash, _Pred, _Allocator>;
template <class _InputIterator,
class _Allocator,
class = enable_if_t<__has_input_iterator_category<_InputIterator>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multiset(_InputIterator, _InputIterator, typename allocator_traits<_Allocator>::size_type, _Allocator)
-> unordered_multiset<__iter_value_type<_InputIterator>,
hash<__iter_value_type<_InputIterator>>,
equal_to<__iter_value_type<_InputIterator>>,
_Allocator>;
template <class _InputIterator,
class _Hash,
class _Allocator,
class = enable_if_t<__has_input_iterator_category<_InputIterator>::value>,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multiset(_InputIterator, _InputIterator, typename allocator_traits<_Allocator>::size_type, _Hash, _Allocator)
-> unordered_multiset<__iter_value_type<_InputIterator>,
_Hash,
equal_to<__iter_value_type<_InputIterator>>,
_Allocator>;
# if _LIBCPP_STD_VER >= 23
template <ranges::input_range _Range, class _Allocator, class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multiset(from_range_t, _Range&&, typename allocator_traits<_Allocator>::size_type, _Allocator)
-> unordered_multiset<ranges::range_value_t<_Range>,
hash<ranges::range_value_t<_Range>>,
equal_to<ranges::range_value_t<_Range>>,
_Allocator>;
template <ranges::input_range _Range, class _Allocator, class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multiset(from_range_t, _Range&&, _Allocator)
-> unordered_multiset<ranges::range_value_t<_Range>,
hash<ranges::range_value_t<_Range>>,
equal_to<ranges::range_value_t<_Range>>,
_Allocator>;
template <ranges::input_range _Range,
class _Hash,
class _Allocator,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multiset(from_range_t, _Range&&, typename allocator_traits<_Allocator>::size_type, _Hash, _Allocator)
-> unordered_multiset<ranges::range_value_t<_Range>, _Hash, equal_to<ranges::range_value_t<_Range>>, _Allocator>;
# endif
template <class _Tp, class _Allocator, class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multiset(initializer_list<_Tp>, typename allocator_traits<_Allocator>::size_type, _Allocator)
-> unordered_multiset<_Tp, hash<_Tp>, equal_to<_Tp>, _Allocator>;
template <class _Tp,
class _Hash,
class _Allocator,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multiset(initializer_list<_Tp>, typename allocator_traits<_Allocator>::size_type, _Hash, _Allocator)
-> unordered_multiset<_Tp, _Hash, equal_to<_Tp>, _Allocator>;
#endif
template <class _Value, class _Hash, class _Pred, class _Alloc>
unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
size_type __n, const hasher& __hf, const key_equal& __eql)
: __table_(__hf, __eql) {
__table_.__rehash_multi(__n);
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
size_type __n, const hasher& __hf, const key_equal& __eql, const allocator_type& __a)
: __table_(__hf, __eql, __a) {
__table_.__rehash_multi(__n);
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(_InputIterator __first, _InputIterator __last) {
insert(__first, __last);
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
_InputIterator __first, _InputIterator __last, size_type __n, const hasher& __hf, const key_equal& __eql)
: __table_(__hf, __eql) {
__table_.__rehash_multi(__n);
insert(__first, __last);
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
_InputIterator __first,
_InputIterator __last,
size_type __n,
const hasher& __hf,
const key_equal& __eql,
const allocator_type& __a)
: __table_(__hf, __eql, __a) {
__table_.__rehash_multi(__n);
insert(__first, __last);
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
inline unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(const allocator_type& __a)
: __table_(__a) {}
template <class _Value, class _Hash, class _Pred, class _Alloc>
unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(const unordered_multiset& __u)
: __table_(__u.__table_) {
__table_.__rehash_multi(__u.bucket_count());
insert(__u.begin(), __u.end());
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
const unordered_multiset& __u, const allocator_type& __a)
: __table_(__u.__table_, __a) {
__table_.__rehash_multi(__u.bucket_count());
insert(__u.begin(), __u.end());
}
#ifndef _LIBCPP_CXX03_LANG
template <class _Value, class _Hash, class _Pred, class _Alloc>
inline unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(unordered_multiset&& __u)
_NOEXCEPT_(is_nothrow_move_constructible<__table>::value)
: __table_(std::move(__u.__table_)) {}
template <class _Value, class _Hash, class _Pred, class _Alloc>
unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
unordered_multiset&& __u, const allocator_type& __a)
: __table_(std::move(__u.__table_), __a) {
if (__a != __u.get_allocator()) {
iterator __i = __u.begin();
while (__u.size() != 0)
__table_.__insert_multi(std::move(__u.__table_.remove(__i++)->__get_value()));
}
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(initializer_list<value_type> __il) {
insert(__il.begin(), __il.end());
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
initializer_list<value_type> __il, size_type __n, const hasher& __hf, const key_equal& __eql)
: __table_(__hf, __eql) {
__table_.__rehash_multi(__n);
insert(__il.begin(), __il.end());
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
initializer_list<value_type> __il,
size_type __n,
const hasher& __hf,
const key_equal& __eql,
const allocator_type& __a)
: __table_(__hf, __eql, __a) {
__table_.__rehash_multi(__n);
insert(__il.begin(), __il.end());
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
inline unordered_multiset<_Value, _Hash, _Pred, _Alloc>&
unordered_multiset<_Value, _Hash, _Pred, _Alloc>::operator=(unordered_multiset&& __u)
_NOEXCEPT_(is_nothrow_move_assignable<__table>::value) {
__table_ = std::move(__u.__table_);
return *this;
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
inline unordered_multiset<_Value, _Hash, _Pred, _Alloc>&
unordered_multiset<_Value, _Hash, _Pred, _Alloc>::operator=(initializer_list<value_type> __il) {
__table_.__assign_multi(__il.begin(), __il.end());
return *this;
}
#endif // _LIBCPP_CXX03_LANG
template <class _Value, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
inline void unordered_multiset<_Value, _Hash, _Pred, _Alloc>::insert(_InputIterator __first, _InputIterator __last) {
for (; __first != __last; ++__first)
__table_.__insert_multi(*__first);
}
template <class _Value, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_HIDE_FROM_ABI void
swap(unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __x, unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __y)
_NOEXCEPT_(_NOEXCEPT_(__x.swap(__y))) {
__x.swap(__y);
}
#if _LIBCPP_STD_VER >= 20
template <class _Value, class _Hash, class _Pred, class _Alloc, class _Predicate>
inline _LIBCPP_HIDE_FROM_ABI typename unordered_multiset<_Value, _Hash, _Pred, _Alloc>::size_type
erase_if(unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __c, _Predicate __pred) {
return std::__libcpp_erase_if_container(__c, __pred);
}
#endif
template <class _Value, class _Hash, class _Pred, class _Alloc>
_LIBCPP_HIDE_FROM_ABI bool operator==(const unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __x,
const unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __y) {
if (__x.size() != __y.size())
return false;
typedef typename unordered_multiset<_Value, _Hash, _Pred, _Alloc>::const_iterator const_iterator;
typedef pair<const_iterator, const_iterator> _EqRng;
for (const_iterator __i = __x.begin(), __ex = __x.end(); __i != __ex;) {
_EqRng __xeq = __x.equal_range(*__i);
_EqRng __yeq = __y.equal_range(*__i);
if (std::distance(__xeq.first, __xeq.second) != std::distance(__yeq.first, __yeq.second) ||
!std::is_permutation(__xeq.first, __xeq.second, __yeq.first))
return false;
__i = __xeq.second;
}
return true;
}
#if _LIBCPP_STD_VER <= 17
template <class _Value, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_HIDE_FROM_ABI bool operator!=(const unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __x,
const unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __y) {
return !(__x == __y);
}
#endif
_LIBCPP_END_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
_LIBCPP_BEGIN_NAMESPACE_STD
namespace pmr {
template <class _KeyT, class _HashT = std::hash<_KeyT>, class _PredT = std::equal_to<_KeyT>>
using unordered_set _LIBCPP_AVAILABILITY_PMR = std::unordered_set<_KeyT, _HashT, _PredT, polymorphic_allocator<_KeyT>>;
template <class _KeyT, class _HashT = std::hash<_KeyT>, class _PredT = std::equal_to<_KeyT>>
using unordered_multiset _LIBCPP_AVAILABILITY_PMR =
std::unordered_multiset<_KeyT, _HashT, _PredT, polymorphic_allocator<_KeyT>>;
} // namespace pmr
_LIBCPP_END_NAMESPACE_STD
#endif
_LIBCPP_POP_MACROS
#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
# include <concepts>
# include <cstdlib>
# include <functional>
# include <iterator>
# include <stdexcept>
# include <type_traits>
#endif
#endif // _LIBCPP_UNORDERED_SET